168998440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{324997}}^1$

素因数の和:325021

約数の個数: 32

約数和(自身を含む): 409497480

約数和(自身を除く): 240499040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 324997, 649994, 1299988, 1624985, 2599976, 3249970, 4224961, 6499940, 8449922, 12999880, 16899844, 21124805, 33799688, 42249610, 84499220, 168998440]

約数ペア:

[(1, 168998440), (2, 84499220), (4, 42249610), (5, 33799688), (8, 21124805), (10, 16899844), (13, 12999880), (20, 8449922), (26, 6499940), (40, 4224961), (52, 3249970), (65, 2599976), (104, 1624985), (130, 1299988), (260, 649994), (520, 324997)]